1. Introduction
1.2. Current Literature; Rationale for this Paper
The existence of a relationship between physics, logic and information has been discussed in many places in the literature. For an authoritative recent review of the former, see the article by Adriaans in the
Stanford Encyclopedia of Philosophy [
1] and Burgin’s
General Theory of Information [
2].
As phenomena, in all but their simplest aspects, information and informational processes display complex recursive, dualistic properties not all of which can be described by standard linguistic logics based on the truth of propositions. As further relevant prior work, I note Volume 8 of the
Handbook of the Philosophy of Science, edited by Adriaans and van Benthem [
3], which includes “Stories of Logic and Information” [
4] by van Benthem and Martinez, and “The Physics of Information” by Bais and Farmer [
5]. Unfortunately from my perspective, the logic of the former article is an epistemic logic referring to abstractions from states of affairs and whose levels, calculi and dynamics use static, non-relational counters. The authors admit that semantic approaches do not account for the nature of inference, but offer no developed alternative. In general, the logic of quantum information (qbits) is a bivalent, linear logic.
What I ask of a logic of a physics of information is that it capture some of the aspects or form of the evolution of information as a complex physical process and permit inferences about the latter. I therefore start this paper with the briefest possible outline of the novel non-linguistic logic I believe equal to this task. The adjective “non-linguistic” characterizes Logic in Reality. It should not be taken to imply the existence of other non-linguistic logics, and in fact I have never been able to identify any. Mathematical logics are bivalent or multi-valent logics in another form. For readers unfamiliar with it, I first outline my update of this logical system, which I call Logic in Reality (LIR) [
6], and its differences from other logics as a first introduction to its application to information.
Note also that many people have refused to accept (1) LIR as a logic; (2) that it has the indicated capability; nor (3) any other proposed well-known logics as alternatives. Upon inspection, all turn out to be variations of modern neo-classical, paraconsistent or paracomplete (intuitionist) logics. Either the law of contradiction or the law of the excluded middle (for mathematical entities) is relaxed, but all are propositional, truth-functional logics, without application to real processes.
3. Relation of LIR to Other Logics
It is not possible in this brief overview to show in detail the critical relation of Logic in Reality to important kinds of modern logics, and I limit the discussion to the following points:
Paraconsistent logic (PCL) is a
linguistic, propositional logic albeit with a non-truth-functional semantics. Despite some early references to real phenomena by Priest [
10], an extension to real processes was never made, by Priest or by others. The result is to drastically limit the application of PCL to the real world, e.g., to the qualitative dualistic aspects of information. In one exception, Da Costa and Krause [
11] applied PCL to quantum particles and showed that they both
are and
are not individuals, or both parts
and wholes. The semantics of LIR are non-truth-functional in the different sense that their elements are not propositions at all, and the concept of truth-functionality (defined as valuations based on homeomorphisms (mappings) between formulas and an algebra of truth functions defined on a given set of values, (0 or 1 in binary logic, several values in many-valued logics) should not be applied.
Quantum logics offer a basis for discussing the dual nature of information in our interpretation. Their elements are similar to non-standard probabilities in that the laws of commutation or distribution are not followed. Aerts’ quantum formalism [
12] can be applied to complex macroscopic phenomena, including the emergence of biological form and human cognition. Sklar wrote in 1992 [
13] that quantum logics were inadequate to resolve quantum paradoxes related to the superposition of states. LIR provides a natural interpretation for quantum superposition in terms of semi-actual and semi-potential states, eliminating the philosophical problems associated with the modified Copenhagen and many-worlds interpretations of quantum mechanics.
Abduction, defined as reasoning to the best explanation and abductive logic, like paraconsistent logics are closer “in spirit” to LIR, but they are essentially restricted to a place on a linguistic logical map [
14], following the rules of propositional, truth-functional logics. The degrees of complexity that are not captured by abductive logic, and some of the facts about real-life abduction that in most theories are suppressed, ignored or idealized can be described by LIR.
5. The Physics of Information
If the premises of Logic in Reality are accepted, there is a series of corollaries that change the conclusions of all of the common theories of the physics of information. Here, I can only present these conclusions without the extensive argument that would be desirable. The reader is then asked to consider these conclusions as points for further study and to judge them the extent that they are, at least, internally consistent. The grounding of information in physics, with or without a human-centered perspective, is a major subject of debate. Problems persist in how fundamental physical theories of quantum mechanics, quantum gravity, and cosmology such as the above, apply to information. I propose that self-dualities of the universe at the most fundamental level are reflected at higher levels as the familiar non-separable energetic dualities: positive and negative charge; north and south magnetic poles; “up” and “down” spin of some quantum particles (fermions). Non-separability means that one entity never occurs without the other, regardless of the distance between them. If there is a net negative charge on clouds, for example, there is a net positive charge on the Earth’s surface.
On the other hand, any discussion of the physics of information cannot neglect the growing field of quantum information and its physics. Let us then look more closely at the characteristics of classical information, quantum information and the proposals emerging from the LIR perspective.
5.1. Critique of Standard Information Theory
I therefore turn to the critique of standard of information theory that emerges from the principles of LIR. The following outline reflects my initial views of the different common positions, starting with “It-from-Bit”:
It-from-Bit- (1)
Immaterial Bits are fundamental and constitute information.
- (2)
They have the properties of binary arithmetic digits.
- (3)
They support the concept of a digital, computational universe that processes information to produce Its (things).
Bit-from-It- (1)
Its are fundamental.
- (2)
They have the properties of energy, better energetic processes, including information and point toward analog, natural computation.
- (3)
Bits as information accompany and/or are an integral part of Its and emergent phenomena. They enter into a posteriori descriptions of digital computation.
Contra Wheeler, Barbour [
24] made a convincing argument for the primacy of things, but left open the possibility that nature is fundamentally digital and continuity an illusion. My theory, outlined below, strongly supports his first position, with the proviso that “things” are primarily understood as dynamic (energetic) processes. However, it offers a significant alternative to the second, based on the self-dualities and dualities of quantum physics which ground LIR and the functional role of the relational properties derived from them at higher levels of reality. As Collier has put it [
25], each interaction (1) in quantum mechanics involves a sort of choice (2), and the choice can be represented in terms of bits (3). But this does not prove that the interaction (1) is constituted by bits (3), still less that non-quantum interactions and all forms of information are so constituted. (As discussed by McGinn [
26], taking
any realist position or ontological option about such “things” as fields and particles involves difficulties which I will not attempt to address here.).
It-and-Bit
Thus, going beyond the simple dichotomy, I will discuss some additional positions, which I refer to as It-
and-Bit:
- (1)
Energy and information are the most fundamental entities in the universe, but neither is ontologically prior to the other.
- (2)
Information and energy emerge together from, or are different aspects of, an as yet undefined primordial substrate more fundamental than either.
In my synthesis of these positions, at some level of reality, I suggest that energy is more fundamental than information, and information emerges from but is always functionally associated with it. In the macroscopic world, energy and information, as well as continuity and discontinuity, are non-separable partners, whose evolution follows the “saw-tooth” pattern (skewed sinusoidal) of alternating predominance of actuality and potentiality described by LIR.
In the thermodynamic world, energetic processes are always accompanied by or have the aspect of meaningful information which evolves further with those processes. As was shown by Kolmogorov [
27], information can be defined as an operator, constituted by vector differences in energy levels, which changes the distribution of probabilities in a given set of energetic processes, constituted by both their potential as well as actual properties. The former provide the basis for the emergence of new, more complex informational entities. Such “Bits” thus emerge from energy and remain in a dynamic relation with it, a position that I have called It-
and-Bit.
Diaz Nafria and Zimmermann [
23] suggest that both matter-energy and information are two different, associated aspects of the same underlying and still unknown primordial structure of the world. The best picture is that they emerge together from this substrate: the concepts of energy and information are always present in fundamental physics. A major objection to Bit-from-It position, that energy is primitive is that it appears meaningless and its ability to function as a source of meaning difficult to establish. In a computational universe digital information as Bits is fundamental and the “presence” of information would appear to provide a ground of meaning, but no mechanism for its emergence is stated, as for example in Lloyd [
28]. Diaz Nafria and Zimmermann therefore opt for an “onto-epistemic” stance. The existence of an onto-epistemology can be seen as a consequence of the absence, according to LIR, of any absolute separation between ontology and epistemology. The ontological ground of information and thus of the meaning that emerges from it, both ontologically and epistemologically, is energy, an energy that is in some sense the prime expression for (or of) the
potentiality of the system. As I discuss in [
6], data are relational entities, and information, given its relational qualities, always entails meaning.
My critique of the Diaz Nafria–Zimmermann program is that it retains a separation of energy and information as standard categories of irreducibly different phenomena. My final variant of It-and-Bit takes into account that the information of processes and thermodynamic change does not inhere in isolated quantum particles. These must, in my view, be considered as energy, with a structure, but, as in the case of the timeless, pre-thermodynamic quantum vacuum, there is no information associated with their interactions other than the interactions themselves, no meaningful data.
I agree with Diaz Nafria and Zimmermann that their “substrate” (systems) is constituted by energy and not an abstraction from energy as in the computational case of It-from-Bit. In my preferred picture, information and energy are the components of all higher level processes, but in contrast to the Diaz Nafria–Zimmermann view, information and energy are not and do not have to be absolutely the same or different, nor emerge in tandem. Because energy is primitive (Bit-from-It), it is the dualistic, oppositional properties of energy that determine the properties of information. In LIR, which describes such a state of affairs, they are the same and different, ontologically and also epistemologically, as the mind moves between focus on one or the other aspect to the partial, temporary exclusion of the other.
6. Neo-Computationalist Approaches: Natural Computation
My major difficulty with computational theories is that they appear to reflect the ontological properties of information but from the LIR standpoint the necessary foundation in energy is absent, necessary for a physics of states [
8]. A group of other recent theories present a view of a universe in which computation is a “natural” process. The form of computationalism developed by Dodig-Crnkovic, informational- or info-computationalism [
32], reflects Floridi’s view of the universe as an energetic, informational structure [
15], in which natural computation governs the dynamics of information. The resulting view, although largely epistemological, has nevertheless a more visible relation to the dialectics of the ontologically oriented Logic in Reality. Together, they constitute a kind of physics in the broad sense of the term.
6.1. Info-Computationalism
As stated by Dodig-Crnkovic [
33]: “Info-computationalism is a view according to which the physical universe on a fundamental level can be understood as an informational structure whose dynamics is a computational process. Matter/energy in this model is replaced by information/computation; matter (structure) corresponds to information while the dynamics—constant changes in the informational structure—are computational processes”.
I note in this connection the application of computational principles to modeling the universe by Zenil [
34]. In his epistemic stance, he states that he believes that everything is computable although not that the universe is necessarily computable. This is his preferred position, however, because he considers it epistemologically the most fruitful and powerful idea in science. The driving force in the universe is that it computes and everything else can be seen either as the result of or as a constraint to computation. In the LIR interpretation, of course, a constraint is not an epistemic abstraction, but an active causal structure, as in the biosemiotics of Kaufmann and Logan [
35]. It is thus necessary to distinguish carefully such approaches from that of a computational universe which assert that the universe is
actually a digital, Turing-like computer that in fact computes using some digital code.
It is significant that Dodig-Crnkovic herself has moved away from a pan-computationalist position [
36]. While remaining agnostic about the question of fundamentality, Dodig-Crnkovic replaces the emphasis where it belongs; namely on understanding
that part of natural phenomena which may be subsumed under the concept of computation. It is to these ideas that the term natural computation refers, that is, information processing by natural systems. In this view, computationalism is not the world; it is a modeling framework that is acceptable within certain domains and does not exhaust our possibilities to relate to the world.
Within this dual-aspect framework, matter may be viewed as a structure (information), in a permanent process of flow (computation). Mind is the process, which is computational, both in its discrete and in its analog view. This work thus presents its own synthesis of two paradigms within contemporary philosophy—computationalism and informationalism—into a new dual-aspect info-computationalist framework.
6.2. The Role of Logic in Reality
Vis à vis this synthesis, Logic in Reality has both a complementary and a supplementary role. LIR states, as we have seen, that relations are dynamic relations of the energetic properties of the entities or processes under discussion. The phrase “the dynamics of information” in the LIR interpretation points to how the properties and elements of information, as a dynamic process in and of itself, change in response to imposed forces. The meaning of the dualism above might be seen in the analogy with wave-particle or matter-energy dualisms in physics, at the core of Logic in Reality. The dualism itself does not mean that the phenomena are separated, and exclude each other; on the contrary, they are mutually determining, constraining and completely indissoluble. In that sense, one may speak of dual-aspect monism. Thus freed from what I consider the burden of the dogma of the computational universe, computationalism as natural computation appears as an acceptable dialectic “partner” of LIR.
Thus LIR can accept that we are already at this point in the part of the universe described by a computational metaphysics. In this framework, information and computation may indeed mutually define one another. In ICON, only, Dodig-Crnkovic has not taken into account the universe as a whole in which non-computational processes may be primary or at least mutually defining at a more fundamental level. Mutually defining in LIR is an ontological as well as an epistemological statement, involving the exchange of energy between elements according to the Principle of Dynamic Opposition. Under these circumstances, the kind of Lupascian dialectical interaction between somewhat opposing theories, opposing certainly in their different emphasis on aspects of existence and information, that are better seen as non-computational can take place.
It is necessary to repeat, at this point, that simple process phenomena can be described by standard bivalent or multi-valent logics. The statement that the logic of/in reality reduces to standard binary logic in the case of such phenomena is not empty. It will be correct in all cases in which the interaction between two entities disappears, as when two individuals refuse a dialog, or the interaction never existed, as in the terms of classical dilemmas and paradoxes.
6.3. LIR and the Ethical Dimension
Logic in Reality describes the logical, non-metaphorical content of an antagonistic interaction between the individual and the world, as on-going informational processes in which both actors change and each, alternately, is the predominant cause of further change. This view is an extension of the concept of Floridi’s Informational Ethics [
37] which I have called Ethical Information [
38]. The origin of
non-ethical behavior can be accommodated in this approach as a consequence of the operation of the fundamental duality of the world at the genetic, individual organism and social levels.
The ontological viewpoint of LIR described in this paper thus contrasts with the predominantly epistemological conceptions of information ethics of Floridi, Dodig-Crnkovic and Zenil. It supports Luhn’s view, in his Causal-Computational theory of Information [
39], that it is impossible to separate human behavior from the informational processes emerging from their self-referential activities that increase the number of new complex states of the universe. Ethical behavior, then, is behavior that facilitates such emergence, and the drive toward such behavior must in this view have the same grounding in physics as the logic that describes it, that is, LIR and the Principle of Dynamic Opposition (
Section 2 above).
Without attempting here to make an exhaustive discussion of ethical issues related to information and its foundations, I note only that Logic in Reality is not topic-neutral as are standard logics, and can address the evolution of qualitative phenomena, permitting a seamless transition between the physics and the ethics of information.
7. Summary and Conclusions
In this paper I have brought together both an interpretation of (1) physical processes in terms of the fundamental self-duality and duality of the matter-energy that constitute them and of (2) the reflection of these properties at higher levels of reality in terms of a dynamic logic that describes their evolution. Logic in Reality (LIR) enables a non-reductionist onto-epistemological picture of information or better informational processes, grounded in physics that answers many of the outstanding problems of previous theories, especially those derived from simple computational models. The supplementary role of LIR vs. more complex informational-computational concepts is suggested.
In the framework for analysis of Logic in Reality (LIR), in answer to the questions of ontological priority, my major conclusions are that (1) energy-matter is ontologically prior to, that is, more fundamental than information as digital bits and (2) the properties of that matter-energy are determining for the properties of information. I have contrasted my views with computational models of the universe in which one assumption is that since information is present throughout nature it is more primitive than energy in nature. I have considered the alternative that matter-energy and information emerge together from some more fundamental underlying but at this time unknown substrate. This picture (It-and-Bit) is conceivable, but it is less parsimonious than my preferred position. It requires a categorial separability between energy and information that is justified essentially on formal rather than physical grounds.
Whether the “unknown substrate” can be equated with the quantum vacuum is a question that I do not believe can yet be answered. My position is that the quantum vacuum does embody energy, the so-called zero-point energy, constituted by truly random quantum fluctuations. However, as these fluctuations are indistinguishable and do not in and of themselves undergo thermodynamic change, information is absent and only becomes associated with energy at the particle-field level.
I have argued that a picture of the physical universe as fundamentally either continuous or discontinuous can be usefully replaced by one in which both continuity and discontinuity are jointly and dynamically instantiated. Thus, LIR provides a logical-ontological supplement to epistemological theories of natural computation [
32], informational-computationalism, which does
not require that information is ontologically primitive.
Finally, regarding ethical issues related to information and its foundations, I have noted only that Logic in Reality is not topic-neutral as are standard logics. In contrast to standard logics, LIR is normative in the sense the normativity of LIR is engendered not only by its axioms, but also by its categorial ontological features that are a consequence of the axioms.
I therefore claim that, as a consequence of the principle of non-separability applied to human individuals and groups, it provides support to the development of an informational ethics and can address the evolution of qualitative phenomena, permitting a seamless transition between the physics and the ethics of information. Logic in Reality is, accordingly, my proposed candidate as a logic of the physics of complex forms of information.